The national parks preceded the National Park Service, but the first great natural park was a state park. Californiaâs Yosemite State Park was established in 1864, by a federal cession approved by President Abraham Lincoln, and on October 21, 1880, President Rutherford B. Hayes toured Californiaâs Yosemite in an open carriage.
In fact, humans have been capturing the energy of moving water for thousands of years. Today, harnessing the power of moving water to generate electricity, known as hydroelectric power, is the largest source of emissions-free, renewable electricity in the United States and worldwide.
A hydro power system captures the impulse of flowing water and converts it to electricity-a process termed mechanical energy.The potential for mini hydro systems depends on the availability of suitable water flow, where it can provide cost effective, clean reliable electricity. hydro power system captures the impulse of flowing water and converts it to electricity-a process termed mechanical energy.